#66A8F6#66A8F6

#66A8F6 is a light, vivid cyan. Relative luminance 0.375; OKLCH L 72.1% C 0.133 H 253.6°. Best body text is #000000 at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#66A8F6
RGB	rgb(102, 168, 246)
HSL	hsl(213, 89%, 68%)
HSV	hsv(213, 59%, 96%)
CMYK	cmyk(58.5%, 31.7%, 0%, 3.5%)
CIE-LAB	lab(67.64, 1.63, -45.22)
CIE-LCH	lch(67.64, 45.25, 272.07°)
OKLab	oklab(72.08% -0.0375 -0.1277)
OKLCH	oklch(72.08% 0.133 253.6)
XYZ	xyz(36.1107, 37.4807, 92.5024)
Luminance	0.3748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A8F6 #F6B466

analogous

#66F0F6 #66A8F6 #6C66F6

triadic

#66A8F6 #F666A8 #A8F666

tetradic

#66A8F6 #F666F0 #F6B466 #66F66C

square

#66A8F6 #F666F0 #F6B466 #66F66C

split-complementary

#66A8F6 #F66C66 #F0F666

monochromatic

#0D68D5 #2C87F3 #66A8F6 #A0C9F9 #DAEAFD

Accessibility & contrast

On white

2.47

#66A8F6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.50

#66A8F6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A8F6

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A8F6	#FFFFFF	#000000	##000000
##66A8F6	1.00	2.47	8.50	8.50
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.50	21.00	1.00	1.00
##000000	8.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87ACF9

Deuteranopia (green-blind)

#749EF4

Tritanopia (blue-blind)

#00BAC4

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66a8f6;
/* rgb */ color: rgb(102, 168, 246);
/* oklch */ color: oklch(72.1% 0.133 253.6);

Tailwind

colors: {
  custom: {
    50: '#9cc1f9',
    500: '#66a8f6',
    950: '#000000',
  },
}

SCSS

$custom: #66a8f6;
$custom-light: #9cc1f9;
$custom-dark: #000000;

JSON

{
  "hex": "#66a8f6",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 246
  },
  "hsl": {
    "h": 212.5,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.72079,
    "c": 0.13304,
    "h": 253.6
  },
  "luminance": 0.37484
}

Semantic roles & 50–950 ramp

primary

#66A8F6

secondary

#F2DEC6

accent

#7C00E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A8F6

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →